CVE-2018-8836

MEDIUM

WAGO 750 Series PLCs < 10 - Denial of Service via TCP Handshake Exploitation

Title source: llm

Description

Wago 750 Series PLCs with firmware version 10 and prior include a remote attack may take advantage of an improper implementation of the 3 way handshake during a TCP connection affecting the communications with commission and service tools. Specially crafted packets may also be sent to Port 2455/TCP/IP, used in Codesys management software, which may result in a denial-of-service condition of communications with commissioning and service tools.

References (3)

Core 3

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/103726

Third Party Advisory, US Government Resource x_refsource_misc

https://ics-cert.us-cert.gov/advisories/ICSA-18-088-01

Vendor Advisory x_refsource_confirm

https://www.wago.com/medias/Vulnerability-in-the-WAGO-Ethernet-TCP-IP-driver.pdf?context=bWFzdGVyfHJvb3R8MjgxNDk0fGFwcGxpY2F0aW9uL3BkZnxoOTcvaDhkLzkxNTAyMjMyMjA3NjYucGRmfGRlNWQ4ODc0NTE5M2UyNTUwNTIyNDRlOWFkNWI2YjNkMzg0YTVhYzlmYTBjNzM4MDdmNmYzOTM5M2ZlMGEzNzE

Scores

CVSS v3 5.3

EPSS 0.0363

EPSS Percentile 88.0%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE

CWE-404

Status published

Products (8)

wago/750-829_firmware < 10

wago/750-831_firmware < 10

wago/750-852_firmware < 10

wago/750-880_firmware < 10

wago/750-881_firmware < 10

wago/750-882_firmware < 10

wago/750-885_firmware < 10

wago/750-889_firmware < 10

Published Apr 03, 2018

Tracked Since Feb 18, 2026